205866780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{490159}}^1$

素因数の和:490178

約数の個数: 48

約数和(自身を含む): 658775040

約数和(自身を除く): 452908260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 490159, 980318, 1470477, 1960636, 2450795, 2940954, 3431113, 4901590, 5881908, 6862226, 7352385, 9803180, 10293339, 13724452, 14704770, 17155565, 20586678, 29409540, 34311130, 41173356, 51466695, 68622260, 102933390, 205866780]

約数ペア:

[(1, 205866780), (2, 102933390), (3, 68622260), (4, 51466695), (5, 41173356), (6, 34311130), (7, 29409540), (10, 20586678), (12, 17155565), (14, 14704770), (15, 13724452), (20, 10293339), (21, 9803180), (28, 7352385), (30, 6862226), (35, 5881908), (42, 4901590), (60, 3431113), (70, 2940954), (84, 2450795), (105, 1960636), (140, 1470477), (210, 980318), (420, 490159)]